Calculating-machine with printing device.



B. BEHR.

CALCULATING MACHINE WITH PRINTING DEVICE.

APPLICATION FILED AUG.28,1911. I 1,041,576. Patented 0011.15, 191.2.

2 SHEETS-SHEET 1.

B. BEHR. CALCULATING MACHINE WITH PRINTING DEVICE.

APPLICATION 311,31) AUG. 28, 1911.

1,041,576, Patented 0 ct.15,1912.

2 SHEETS-SHEET 2.

BEBNHARD BEHR, OF

P5121? if all.

DRESDEN, GERMANY.

CALCULATING-MACHINE WITH PRINTING DEVICE.

Specification of Application filed August 28, 1911. Serial No. 646,310.

total in the adjusting mechanism to the type'mechanism. It 1s possibleon transmitting to the total to move figure disks to a lower number sothat an incorrect result is printed. The machine is accordingly lockedfor the plus movement, but not simultaneously also for theminusmovement. For simultaneously also locking the minus movement disksprovided with radially directed notches or recesses are employed, ac-

cording to this invention, in which at the moment of transmitting, thetotal operated pins engage, which are independent of the calculatingmechanism, thereby locking the figure disks and the complete calculatingmechanism. Any further movement of the crank or the lever is thusprevented. As the locking device is independent of the caiculat-ingmechanism 2 e. of the adjustable ruler, the ruler can be adjustedindependently of the stationary adjusting device. It is not necessary inthe practical calculation of decimal figures to print the completetotal, but only that part which comes in question practically.Consequently the ruler is moved, before printing, such a distafio'e tothe right that the surplus decimals are beyond the adjusting means forv'printing the total which has remained stationary. By thisarrangement, on the comma changing its position, the commas are broughtone under the other for the purpose of subsequent addition, which is ofgreat importance for carrying out and checking the ad dition.

in the accompanying drawing :--Figures l and 1", together show themachine in side eievation out of operatior the parts not required forexplanation j 2 and :2 together 2 tion ofthe device in the op t Fig. 3is plan of a figure cash. modification according to 1. a n .33 liL t u-Letters Patent. rammed Oct. 15,1912.

disk is omitted, and the figure disk itself is employed as the notcheddisk. Fig. 5 is a vertical section of Fig. 4-.

On the bevel wheel of the change gear a: connected to the ruler s ismounted a disk 0-, which is shown in plan in Fig. 3. This disk isprovided with peripheral notches of various depths corresponding to thenumbers l to 9.

In the front wall of the machine are mounted rods n which under theaction of spiral springs m engage with the peripheral notches of thedisks 0. The rear end of the spring operated rods in. is hinged to abell-crank lever h which is hinged to an arm is provided on the frontwall of the machine. The free end of the bell-crank leverhissdetachablyqconnect'ed by means of a rod Z to the end of thebellcrank-lever f f. This bell-crank lever f f (known from applicationSer. No. 558715) is at the front end of one arm provided with a toothedsegment 6 which correspondingly to the depression of the keys 6 adjuststhe corresponding figure disk. The detachable connection bet-ween therod Z and the end of the arm of the bell-crank lever f f consists inproviding the lever I with a forked end (Z which engages with a pin 2'-of the lever arm The lever arms f are by means of links 0 connected "tothe toothed segment levers I) which in the known manner engage with theteeth of the type segment g. Below the rod Z is rotatably mounted a pawl1" of which one end abuts against the lower edge of the rod Z. The otherend of the pawl r is by means of a rod a connected to the operatinglever p. The operating lever 7) is rotatably mounted on the shaft 2which traverses the machine. For purpose of withdrawing the separaterods 12 simultaneously from the notches of the notched disks 0 by meansof a single operating lever 79, there are mounted on the rotary shaft .2disks Q) for each corresponding rod at which disks by means of a slotengage with the pins to of the rods 0.

In the position of the device illustrated in l the separate rods 'n arewithdrawn rein the notches of the d? by rotating the "and lover p.Sin'iultanera. of the hand-lcver p which provided as a he n lever, hasmoved the connecting to the right whereby the pawl 1' has the lower endengages with a pin 2' of the bell-crank leversprings m are pressed intothe notches of the disk 0. Simultaneously the pawl r is rotated and theforked end (i of the rod Z arm f so that in consequence of the couplingof the separate rods n to the toothed segment b each segment makes amovement corresponding to the corresponding figure and adjusts thecorresponding segment with a corresponding type under the hammer of;

the writing mechanlsm.

In Thomas calculating machines in which, as is known, it is alsopossible to simultaneously multiply, there exists in an extremelyannoying manner, in consequence of the extraordinary rapid rotation ofthe figure disks by means of the crank, a centrifugal action which leadsto incorrect calculations. For this reason it is possible according toFigs. 4 and 5 to omit the special notched disk and to-provide the figuredisks themselves with peripheral notches so that the figure disksimultaneously serves as notched disk. In this manner the mass setinmotion is substantially reduced, especially by the reduction in materialin consequence of the peripheral notches in the figure disk which aretherefore themselves also substantially reduced in weight.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat 1' claim is 1. in a calculating machine provided with printingmechanism and a figure device, the combination with rotatable disksprovided with radial notches of different depth corresponding to thedifferent number of values, and spring controlled devices arranged to'noans'rc engage the notches in said disks to arrest rotation thereof,substantially as described.

2. In a calculating machine provided with printing mechanism and a iiure device,-t-he combination with rotatable disks provided with radialnotches of different depths and figures or characters of different valueadjacent said notches, and spring controlled rods arranged to engage thenotches, in said. disks to arrest rotation thereof, substantially asdescribed.

3. In a calculating machine provided. with a figure device, thecombination with rotatable disks provided. with radial notches of el. Acalculating machine provided'with a' figure device, the combination withrotatable disks provided with radial notches of difi'erent depthscorresponding to the numbers of different values, spring c ntrolled rodsfor engagement with said notches to arrest rotation of said disks, anoperating shaft, notched segments on said shaft, one

for each rod, said rods having pins lying in 7 the notches of saidsegments, means for op erating said shaft to withdraw said rods fromengagement with said disks, and link mechanism operated upon movement ofsaid shaft, substantially as and for the purposes set forth.

in testimony whereof I have hereunto set my hand in presence of twosubscribing wit nesses.

BERNHARD BEER.

Witnesses PAUL Arms, CLARE SIMON.

fiopileacf this patent he obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, f3. 6.

